How many covalent bonds join the atoms in a molecule of ammonia (nh3) ?

A classroom has a volume of 288m3. What is its volume in km3

Imagine a beaker divided down the center by a rigid membrane that is freely permeable to water but impermeable to glucose. Side 1 contains a 10% glucose solution & side 2 contains the same volume of pure water.

The greatest amount of transpiration and evaporation will occur most likely when the air temperature is

Why if fluorine the most reactive non metal?

An unknown element, x, reacts with rubidium to form the compound rb2x. in other compounds this element also can accommodate up to 12 electrons rather than the usual octet. what element could x be?

What are the elements and number of atoms in the compound c6h12o6?

A molecule has one carbon-carbon double bond and four monovalent atoms or groups. how many different geometric isomers exist for this molecule?

Is oxygen a alkaline earth metal?

What is the ph of 0.20 m nitrous acid at equilibrium (ka = 4.6*10-4) ?

A piece of metal with a mass of 121 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?